Noob question 727 really low shift points

"Ok, so when I got the car, I got nothing to go on, literally guy lied and said it was a 360, it's actually a 340"

I say lucky you, 340 is much better than a 360..
50 years ago, when new, maybe

But today, as a rebuild, I'll take a 360 over a 340 any day

Now, I'm I want a block to sit in the garage as an investment to sell on a rainy day...340 all the way